Portion of a back face of a golf club head



FIG. 1 is a toe-side, rear perspective view of the portion of a back face of a golf club head of the present invention.

FIG. 2 is a bottom, rear perspective view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a toe side elevational view thereof.

FIG. 6 is a heel side elevational view thereof.

FIG. 7 is a top elevational view thereof; and,

FIG. 8 is a bottom elevational view thereof.

The broken line showing of portions of the golf club head outside of a back cavity in FIGS. 1-8, and the broken line showing of the inside of the oval member and logo within the back cavity in FIGS. 1, 2, and 4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a portion of a back face of a golf club head, as shown and described. 